Warning: require_once(../config/db.php): Failed to open stream: No such file or directory in C:\xampp\htdocs\tienda\ajax\buscar_productos_finales.php on line 2

Fatal error: Uncaught Error: Failed opening required '../config/db.php' (include_path='C:\xampp\php\PEAR') in C:\xampp\htdocs\tienda\ajax\buscar_productos_finales.php:2
Stack trace:
#0 C:\xampp\htdocs\tienda\tmp_include_test.php(6): require()
#1 {main}
  thrown in C:\xampp\htdocs\tienda\ajax\buscar_productos_finales.php on line 2